APBS is a software package for the numerical solution of the Poisson-Boltzmann equation, a popular continuum model for describing electrostatic interactions between molecular solutes over a wide range of length scales. <http://www.poissonboltzmann.org/>.
Please register at http://goo.gl/LGVU5j before downloading!

A Python package with bindings to the "Virtual Instrument Software Architecture" VISA library, in order to control measurement devices and test equipment via GPIB, RS232, or USB.
Note: Development of PyVisa moved to github
https://github.com/hgrecco/pyvisa
This page is of historical interest only!

Improved(download multiple files at once, config, GUI) client for the BitTorrent peer-to-peer sharing solution. This project is also the home of WebTorrent++ a BitTorrent client with a webbased user interface.

PythonToolkit (PTK) is an interactive environment for python. It was designed to provide a python based environment similiar to Matlab for scientists and engineers however it can also be used as a general purpose interactive python environment.

WideStudio is an Integrated Development Environment (IDE) for building window applications in C++, Ruby, Python an Perl for Windows, MacOSX, Linux, FreeBSD, SOLARIS and other unix and BTRON and T-Engine. This is open and free (under MIT/X Consortiun Lice

Flash! Torrent is a BitTorrent client that includes a small web browser for navigate in the webs about BitTorrent, an own tracker, etc. You can configure upload speed, know the number of seeds and peers of a torrent, multilanguage and much more...

The Carolina Computer Assistive Technolog group at UNC-Chapel Hill focuses on the development of enabling technologies. We are currently maintaining the pyTTS package here, but our older work is still available for (unsupported) use.